Any day now, I’ll attract my 10,000th follower on Twitter. Whoever you are, thanks. Not coincidentally, Twitter has become my favorite social-media platform. So this seems like a good moment to reflect on social media, sustainability and journalism.

Like most of you, I imagine, I’m spending more time lately with social media — Twitter, Facebook, LinkedIn, Google+ and blogs (obviously) — and less with newspapers, magazines, television, radio and books. While there’s obviously overlap between digital and traditional media, I’m finding social media to be an increasingly efficient and effective way for me to gather and absorb information, which is what I do.